Illinois Attorney General Lisa Madigan has filed a lawsuit in Madison County Circuit Court alleging that past and present operators of the Wood River oil refinery allowed contaminants to enter the groundwater under the refinery and migrate beyond the refinery’s property line in the village of Roxana, the St. Louis Business Journal reports. The three-count complaint, filed May 18, names the current owner of the refinery, WRB Refining LP, and several former owners and operators, including ConocoPhillips and Shell Oil. The lawsuit alleges that contaminants including oil, gasoline and hazardous wastes leaked into and permeated the groundwater at the refinery.